Is a sewing needle magnetic or non magnetic?
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What is a galvanometer?
How echo is produced?
By which formula, the values in one thermometer can be converted into that of another thermometer ?
How can you conform that magnetic lines come from a single bar magnet with out any external instruments?
Mention the applications of electron microscope. : quantum physics
can we use kgs instead of kg? why?
If a plane is in the air and there is a fly flying inside the plane does the plane get heavier when the fly lands?
What is sonar?
Does sunlight reflected off a mirror increase the temperature of the sun-rays?
Why does the reflection of objects seen on a cheap looking glass give distorted images ?
What is the laws of dry or solid friction.
What is Sextent ?